Java spring mvc多数据源配置

<bean id="dataSourceA"         class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

<property name="driverClassName" value="${jdbc.driverClassName}" />

<property name="url" value="${jdbc.url}" />

<property name="username" value="${jdbc.username}" />

<property name="password" value="${jdbc.password}" />

<property name="maxActive" value="${jdbc.maxActive}" />

<property name="maxWait" value="${jdbc.maxWait}" />

</bean>

<bean id="dataSourceB"         class="org.apache.commons.dbcp.BasicDataSource">

<property name="driverClassName" value="${vjdbc.driverClassName}" />

<property name="url" value="${vjdbc.url}" />

<property name="username" value="${vjdbc.username}" />

<property name="password" value="${vjdbc.password}" />

<property name="maxActive" value="${jdbc.maxActive}" />

<property name="maxWait" value="${jdbc.maxWait}" />

</bean>

2、再配置一个dataSource 管理 key 值和value值对应，默认选择dataSourceA ，其他配置按照正常的spring mvc 配置即可。

<bean id="dataSource" class="com.broadengate.util.DynamicDataSource">

<!-- 通过key-value的形式来关联数据源 -->

<property name="targetDataSources">

<map key-type="java.lang.String">

<entry value-ref="dataSourceA" key="dataSourceA"></entry>

<entry value-ref="dataSourceB" key="dataSourceB"></entry>

</map>

</property>

<property name="defaultTargetDataSource" ref="dataSourceA" >

</property>

</bean>

3、sessionFactory 中使用 dataSource做数据源。

4、新建一个DynamicDataSource类继承AbstractRoutingDataSource。

public class DynamicDataSource extends AbstractRoutingDataSource{

public static final String DATA_SOURCE_A = "dataSourceA";

public static final String DATA_SOURCE_B = "dataSourceB";

private static final ThreadLocal<String> contextHolder = new ThreadLocal<String>();

public static void setCustomerType(String customerType) {

contextHolder.set(customerType);

}

public static String getCustomerType() {

return contextHolder.get();

}

public static void clearCustomerType() {

contextHolder.remove();

}

@Override

protected Object determineCurrentLookupKey() {

return getCustomerType();

}

}

5、切换数据源,这一步必须在进入业务层之前切换。

DynamicDataSource.setCustomerType(DynamicDataSource.DATA_SOURCE_A);

源码地址获取：mingli

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